Nitrogen removal and noise reduction structure for oxygen generator

Abstract

The structure comprises a box body and a PET sintering silencing piece, the box body is provided with an air inlet, a partition plate is arranged in the box body, the partition plate is provided with a plurality of through holes, the side portion of the box body is provided with a through hole, the PET sintering silencing piece is inserted into the through hole in a penetrating mode, and part of the PET sintering silencing piece is located in the box body. The interior and the surface of the PET sintering silencing part are of a porous structure. According to the nitrogen discharge and noise reduction structure, the PET sintering noise reduction piece can effectively reduce noise of gas discharged by the nitrogen discharge port through a porous structure, energy conversion, sound wave scattering, a damping effect, impedance matching and other mechanisms, the nitrogen discharge and noise reduction structure is simple in structure, and compared with an existing noise reduction cotton structure, the nitrogen discharge and noise reduction structure can effectively reduce noise of the gas discharged by the nitrogen discharge port. And the silencing effect is greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of oxygen generator, especially a nitrogen exhaust sound attenuation structure for oxygen generator. BACKGROUND

[0002] With the improvement of people's living standards, oxygen generator is no longer limited to clinical use, but gradually enters ordinary families. In the household oxygen generator, the compressor inhales air, then exhausts after adsorbing nitrogen by the molecular sieve cylinder. Due to the sharp expansion of the volume at the outlet, high-decibel noise is generated. The existing household oxygen generator basically uses sound attenuation cotton and wool felt to process the noise. The sound attenuation structure is relatively complex, and the sound attenuation effect is not good. SUMMARY

[0003] The utility model aims at overcoming the above-mentioned deficiencies of the prior art, and provides a nitrogen exhaust sound attenuation structure for oxygen generator.

[0004] According to one aspect of the utility model, a nitrogen exhaust sound attenuation structure for oxygen generator is provided, comprising:

[0005] A box body is provided with an air inlet connected to the nitrogen exhaust port of the oxygen generator. A partition is arranged in the box body, and a plurality of through holes are arranged on the partition. The side of the box body is provided with a perforation.

[0006] The PET sintered sound attenuation piece is inserted into the perforation. Part of the PET sintered sound attenuation piece is located inside the box body. The inside and surface of the PET sintered sound attenuation piece are both porous structures.

[0007] The nitrogen exhaust sound attenuation structure of the utility model is connected to the nitrogen exhaust port of the oxygen generator. The nitrogen exhaust port of the oxygen generator is connected to the air inlet of the box body. The nitrogen exhaust port of the oxygen generator is connected to the air inlet of the box body. The nitrogen exhaust port of the oxygen generator is connected to the air inlet of the box body. The nitrogen exhaust port of the oxygen generator is connected to the air inlet of the box body. The nitrogen exhaust port of the oxygen generator is connected to the air inlet of the box body. The nitrogen exhaust port of the oxygen generator is connected to the air inlet of the box body. The nitrogen exhaust port of the oxygen generator is connected to the air inlet of the box body. The nitrogen exhaust port of the oxygen generator is connected to the air inlet of the box body. 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[0008] Further, the perforations are circular, and the PET sintered sound-damping piece is columnar.

[0009] Therefore, in the case of limited installation space, the columnar PET sintered sound-damping piece can effectively increase the contact area of the PET sintered sound-damping piece with nitrogen in the box body, thereby improving the sound-damping effect.

[0010] Further, the part of the box body close to the PET sintered sound-damping piece is tapered.

[0011] Therefore, this can make the nitrogen in the box body flow to the position where the PET sintered sound-damping piece is located, thereby improving the sound-damping effect.

[0012] Further, the number of through holes is five, and the five through holes are arranged in an overall X shape.

[0013] Therefore, this can make the nitrogen entering the box body pass through the partition plate uniformly and flow to the position where the PET sintered sound-damping piece is located.

[0014] Further, the hole wall of the perforation is provided with a notch part.

[0015] Therefore, the presence of the notch part facilitates the installation and removal of the columnar PET sintered sound-damping piece.

[0016] Further, the gas inlet is located at the top of the box body, and the gas inlet and the perforation are located on both sides of the partition plate.

[0017] Therefore, it is ensured that the nitrogen entering the box body first passes through the partition plate uniformly and then flows to the position where the PET sintered sound-damping piece is located, thereby ensuring the sound-damping effect of the PET sintered sound-damping piece.

[0018] Further, the box body comprises an upper box and a lower box, the upper box and the lower box are buckled together and jointly enclose a cavity for nitrogen to pass through, the gas inlet is arranged on the upper box, the partition plate is arranged in the lower box, and the perforation is arranged on the side of the lower box.

[0019] Therefore, the box body assembled by the upper box and the lower box facilitates the confirmation of the installation position of the PET sintered sound-damping piece in the lower box, thereby ensuring the sound-damping effect

[0020] Further, a circle of grooves is arranged on the port surface of the lower box facing the upper box, a circle of protrusions adapted to the grooves is arranged on the port surface of the upper box facing the lower box, and the upper box and the lower box are buckled together with the protrusions inserted into the grooves.

[0021] Therefore, the upper box and the lower box can be stably assembled together through the insertion and cooperation of the protrusions and the grooves, and the sealing property of the box body after assembly can also be ensured.

[0022] Further, a stop edge is arranged on the upper box.

[0023] Therefore, the baffle is designed to work in conjunction with the compressor cover in the oxygen generator to ensure that the nitrogen exhaust and noise reduction structure can be securely installed in the oxygen generator.

[0024] Furthermore, the upper box is equipped with a clearance space.

[0025] Therefore, the empty space can prevent the nitrogen exhaust and silencing structure from interfering with the compressor on the oxygen generator. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of a nitrogen exhaust and noise reduction structure for an oxygen generator according to the present invention.

[0027] Figure 2 for Figure 1 The diagram shows the disassembled structure of the nitrogen removal and noise reduction structure.

[0028] Figure 3 for Figure 1 The diagram shows a split structure of the nitrogen venting and noise reduction structure from another perspective. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0030] In the description of this utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more. It should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "connected," "linked," and "set" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components.

[0031] See Figures 1 to 3 A nitrogen exhaust and noise reduction structure for an oxygen generator includes a housing 1 and a PET sintered noise reduction component 2.

[0032] See Figure 1The box body 1 is internally hollow, and an air inlet 11 is formed on the box body 1, which is used to be connected with a nitrogen outlet of an oxygen generator, and nitrogen discharged from the oxygen generator enters the box body 1 through the air inlet 11.

[0033] Referring to Figures 1 to 3 In the embodiment, the box body 1 comprises an upper box 101 and a lower box 102, the upper box 101 and the lower box 102 are buckled together and jointly enclose a cavity for nitrogen to pass through, the air inlet 11 is arranged on the upper box 101, a partition plate 12 is formed in the lower box 102, a plurality of through holes 13 are formed on the partition plate 12, the partition plate 12 divides the inner cavity of the box body 1 into a first cavity 1021 and a second cavity 1022, nitrogen discharged from the oxygen generator enters the first cavity 1021 of the box body 1 through the air inlet 11, and then enters the second cavity 1022 through the through holes 13 on the partition plate 12, the number of the through holes 13 on the partition plate 12 is five, and the five through holes 13 are arranged in an X shape as a whole, so that the nitrogen entering the first cavity 1021 of the box body 1 can uniformly pass through the partition plate 12 and then enter the second cavity 1022, and then flow to the position where the PET sintered sound-absorbing part 2 is located.

[0034] Referring to Figure 1 and Figure 2 A perforation 14 is formed on the side of the box body 1, specifically, the perforation 14 is arranged on the side of the lower box 102, the PET sintered sound-absorbing part 2 is inserted into the perforation 14, and part of the PET sintered sound-absorbing part 2 is located inside the box body 1, and the nitrogen entering the box body 1 can be discharged through the PET sintered sound-absorbing part 2.

[0035] The PET sintered sound-absorbing part 2 is formed by sintering PET material, the inside and the surface of the PET sintered sound-absorbing part 2 are both porous structures, the whole PET sintered sound-absorbing part 2 is microporous, the porous structure inside the PET sintered sound-absorbing part 2 can effectively absorb sound wave energy, reduce sound wave reflection and propagation, thereby reducing noise, part of the energy of the sound wave is converted into heat energy due to friction and viscous action when the sound wave passes through the PET sintered sound-absorbing part 2, further reducing the intensity of the sound wave, the complex internal structure of the PET sintered sound-absorbing part 2 can scatter the sound wave, reduce the concentrated propagation of the sound wave, and achieve the sound-absorbing effect, the damping characteristics of the material of the PET sintered sound-absorbing part 2 can inhibit vibration and reduce noise generated by vibration, the acoustic impedance of the PET sintered sound-absorbing part 2 is close to that of air, which is helpful for the sound wave to enter the material inside and be absorbed instead of being reflected, that is, the PET sintered sound-absorbing part 2 can effectively reduce the noise of the gas discharged from the nitrogen outlet of the oxygen generator and entering the box body 1 through the mechanisms of the porous structure, energy conversion, sound wave scattering, damping effect and impedance matching.

[0036] Referring to Figure 1 and Figure 2, the air inlet 11 is located at the top of the box body 1, specifically, the air inlet 11 is arranged on the upper box 101, the air inlet 11 and the perforation 14 are located on both sides of the partition plate 12, so that the nitrogen entering the box body 1 can first uniformly pass through the partition plate 12 and then flow to the position where the PET sintered silencer 2 is located, thereby ensuring the silencing effect of the PET sintered silencer 2.

[0037] Referring to Figure 1 and Figure 2 , the perforation 14 is in a circular shape, and the PET sintered silencer 2 is in a columnar shape, so that in the case of limited installation space on the oxygen generator, the columnar PET sintered silencer 2 can effectively increase the contact area between the PET sintered silencer 2 and the nitrogen in the box body 1, thereby improving the silencing effect; the perforation 14 is formed with a notch portion 141 on the hole wall, and the presence of the notch portion 141 facilitates the assembly and disassembly of the columnar PET sintered silencer 2.

[0038] Referring to Figure 2 , the part 20 near the PET sintered silencer 2 inside the box body 1 is in a tapered shape, so that the nitrogen in the box body 1 can flow to the position where the PET sintered silencer 2 is located, thereby improving the silencing effect.

[0039] Referring to Figure 2 and Figure 3 , the port surface of the lower box 102 facing the upper box 101 is formed with a circle of grooves 15, the top of the partition plate 12 is also formed with a corresponding groove portion 121, both ends of the groove portion 121 are in communication with the grooves 15, the port surface of the upper box 101 facing the lower box 102 is formed with a circle of protrusions 16 matched with the grooves 15, and the port surface of the upper box 101 facing the lower box 102 is formed with a protrusion portion 19 matched with the groove portion 121 at the corresponding position, the upper box 101 and the lower box 102 are buckled together, the protrusions 16 are inserted into the grooves 15, and the protrusion portion 19 is inserted into the groove portion 121, the upper box 101 and the lower box 102 can be stably assembled together through the insertion and cooperation of the protrusions 16 and the grooves 15 and the insertion and cooperation of the protrusion portion 19 and the groove portion 121, and the sealing performance of the box body 1 after assembly can also be ensured, and the box body 1 assembled by the upper box 101 and the lower box 102 can facilitate the confirmation of the installation position of the PET sintered silencer 2 in the lower box 102 during the assembly process, thereby ensuring the silencing effect; after the installation of the PET sintered silencer 2 is completed, the upper box 101 and the lower box 102 are buckled together, and then the upper box 101 and the lower box 102 can be firmly pressed together by the ultrasonic equipment.

[0040] Referring to Figure 1 and Figure 2 , the upper box 101 is formed with a stop edge 17, which cooperates with the compressor cover in the oxygen generator to ensure that the nitrogen exhaust silencing structure can be stably installed in the oxygen generator.

[0041] Referring to Figure 1 and Figure 2 The box 101 is formed with a clearance 18, which can prevent the nitrogen exhaust muffling structure from interfering with the compressor of the oxygen generator.

[0042] Referring to Figures 1 to 3 The nitrogen exhaust muffling structure is connected with the nitrogen exhaust port of the oxygen generator through the air inlet 11 and cooperates with the compressor cover in the oxygen generator through the baffle 17, so that the nitrogen exhaust muffling structure can be stably installed in the oxygen generator. The nitrogen gas discharged by the oxygen generator enters the first cavity 1021 of the box body 1 through the air inlet 11. The five through holes 13 on the partition plate 12 can make the nitrogen gas in the first cavity 1021 uniformly pass through the partition plate 12 and then enter the second cavity 1022, and flow to the position where the PET sintering muffling piece 2 is located, and finally be discharged through the PET sintering muffling piece 2. The PET sintering muffling piece 2 can effectively reduce the noise of the gas discharged from the nitrogen exhaust port through mechanisms such as porous structure, energy conversion, sound wave scattering, damping effect and impedance matching. The nitrogen exhaust muffling structure has a simple structure, and the soundproof effect is greatly improved compared with the existing soundproof cotton structure through testing.

[0043] The above only describes some embodiments of the utility model, which aims to illustrate the technical means of the utility model, and is not limited to the technical range of the utility model. Those skilled in the art can make obvious improvements to the utility model according to the existing common knowledge, which falls within the protection scope of the utility model.

Claims

1. A nitrogen exhaust and noise reduction structure for an oxygen generator, characterized in that, include: The box body has an air inlet for connecting to the nitrogen exhaust port of an oxygen generator, a partition with multiple through holes inside the box body, and perforations on the side of the box body; and The PET sintered sound-absorbing component is inserted into the perforation, and part of the PET sintered sound-absorbing component is located inside the box body. The interior and surface of the PET sintered sound-absorbing component are both porous.

2. The nitrogen-removing and noise-absorbing structure according to claim 1, characterized in that, The perforations are circular, while the PET sintered sound-absorbing parts are columnar.

3. The nitrogen-removing and noise-absorbing structure according to claim 1, characterized in that, The part of the box body near the PET sintered sound-absorbing component is tapered.

4. The nitrogen-removing and noise-absorbing structure according to claim 1, characterized in that, The number of through holes is five, and the five through holes are arranged in an X shape.

5. The nitrogen-removing and noise-absorbing structure according to claim 2, characterized in that, The perforation has a notch on its wall.

6. The nitrogen-removing and noise-absorbing structure according to claim 1, characterized in that, The air inlet is located at the top of the box, and the air inlet and the perforation are located on both sides of the partition.

7. The nitrogen-exhausting and noise-reducing structure according to any one of claims 1 to 6, characterized in that, The box body includes an upper box and a lower box, which are fastened together and together enclose a cavity for nitrogen to pass through. The air inlet is located on the upper box, the partition is located in the lower box, and the perforation is located on the side of the lower box.

8. The nitrogen-removing and noise-absorbing structure according to claim 7, characterized in that, The lower box has a groove on the port side facing the upper box, and the upper box has a protrusion on the port side facing the lower box that matches the groove. The upper box and the lower box are fastened together and the protrusion is inserted into the groove.

9. The nitrogen-removing and noise-absorbing structure according to claim 7, characterized in that, The upper box is provided with a retaining edge.

10. The nitrogen-removing and noise-absorbing structure according to claim 7, characterized in that, The upper box is provided with a clearance space.

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